In addition to the standard point accumulation, having multiple people spend on the same card may be a way for you to hit annual spending bonus thresholds. (rewardexpert.com)
There are only about 6 weeks left in the year and some of the spending bonus thresholds are very high. (rewardexpert.com)
Also, if you are going for the Southwest Companion Pass in early 2018, be very careful not to reach the initial spending bonus threshold of $ 2,000 and earn the 60,000 point bonus before January 2018. (siftswift.com)